Engine control by ECU (Electronic Control Unit) can be shortly described by informations coming from sensors sent to the ECU, and by calculated and setting values sent to actuators by the ECU. This paper describes idle regulations observations on an engine simulator. The observation of specific idle driving strategies is especially performed by using an ECU which drives an idle valve based on stepper motor linear actuator. Various sub-models like starting models or road models allow idle pintle motion patterns to be generated, showing idle control strategies and calibrations.

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